TGM – Top Drill’s cluster drill – consists of a robust canister in which Top Drill TM hammers are fitted. 

These hammers utilize specially designed drill bits. Hammers fitted with bits rotate with the canister. 

FEATURES AND BENEFITS

1. Specialized for drilling extremely large holes
2. Suitable for sensitive downtown infrastructure
3. Efficient TM hammers provide drilling with lower air consumption
4. Same size of bits lead to cost reduction compared to conventional large DTH bits
5. Bits are free to be rotated and buttons wear evenly
6. Joint with Kelly box, Hexagonal pin or Flange